Outer guide means for a valve tappet

Details Outer guide means for a valve tappet Outer guide means for a valve tappet

1989-03-15

1990-05-15

Husar, Stephen F.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9051, F01L 114

Patent

active

049248251

ABSTRACT:
An outer guide means for a valve tappet receiving an automatic, hydraulic earance compensation element of use in internal combustion engines, the tappet being disposed directly between a cam of a camshaft and a valve stem, the guide means comprising a wear-resistant end member co-operating with the cam, a hollow cylindrical stem part made of an extrudable polymeric substance and closed at one end by the end member and sliding in a guide bore in a cylinder head, and means coaxially disposed in the stem part thereof and adapted to receive the clearance compensation element, characterized in that a thin-walled unitary reinforcing element (10, 22, 41) is provided which is drawn from sheet metal and which, on the one hand, is secured to the end member (8, 26, 42) and, on the other hand, is positively connected to the stem part (9, 32, 36).

REFERENCES:
patent: 3658038 (1972-04-01), Bergmann
patent: 4367701 (1983-01-01), Buente
patent: 4430970 (1984-02-01), Holtzberg et al.

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